Molding-flask.



A. G. MOTT, JR.

MOLDING FLASK. APPLICATION FILED APR. 19, 1912v Patented Dec. 9, 1913.

4 SHEETSSHEIJT 1.

A. G. MOTT, JR.

MOLDING FLASK.

APPLICATION FILED APR.19, 1912 4 SHEETS-SHEET 2.

Patented Dec. 9, 1913.

A. G. MOTT, JR. MOLDING FLASK.

APPLICATION FILED APR. 19, 1912.

Patented Dec. 9, 1913.

4 SHEETSBHEET 3.

U 45L HQ A. q. MOT 'JR. MOLDING FLASK.

APPLIUATION FILED APR. 1 1912. I. 1 ,08 1 ,25 1 Patented Dec. 9, 1913.

4 SHEBTS-SEEET 4'.

UNITEfi sans nrnn .AB'RAM c. MOTT, m lor'rnitanntrnm, rnnnsrnvanra, nssrenon. T AIBZtR.AM cor;

s'rovn com any, or rnrLanntrr-rm, PENN$YLVANIA, a CORPORATION or ramismvanra.

ahmud-stas Patented Dec. '9, 1913..

Application filed April 19, 1912 Serial No. 691,793.

1 To all whom it may concern:

Be it known that I, ABRAM G. MoT'r, Jr.,

- a citizen of the United States, residing in a the metal is poured so as to dispense with a large number of flasks.

The invention also relates to certain improvements in flasks made in two or more parts.

The main object of the invention is to rovide means for retaining the sand in the hash while the flask is being manipulated so that the flask can be turned without discharging the sand; yet allowing the flask to be removed from the sand mold when completed.

A further object of the invention is to provide means for removing the cope from the drag and from the pattern board.

A still further object of the invention is to provide means for coupling an additional section to a flask when necessary.

The invention also relates to certain details which will be fully described hereafter.

In the accompanying drawingsz-Figure 1, is a side view of a flask illustrating my invention; Fig. 2, is a plan view of a portion of the flask illustrated in Fig. 1; Fig. 3, is a Inn. View of the entire flask, drawn to a re uced scale; Fig. 1, is a sectional View on the line (1-4:, Fig. 3; Fig. 5, is a sectional view of a portion of the flash on the line bb,' Fig. 8; Fig. 6, is a sectional view on the line w-a, Fig. 3; showing the sand supporting frame retracted; Fig. 7, isa plan View of the support for the sand of the mold; Fig. 8, is a perspective view of the operating lever for the sand support; Fig. 9,

is a perspective view of one of the sliding blocks; Fig. 10, is a perspective View of the eccentric for operating the levers for separating the flask; Fig. 11, is a detached perspective view of the two separating levers; Fig. 12, is a view of aniodification of the means for moving the independent members of the sand support; Figs. 13, 14, and 15, are diagram views illustrating the method of using myimproved molding flask; and

Fig. 16, is a sectional view on the line 5-4:, Fig. 2. Fig. 1?, is a side View of the flask, showing the modificationillustrated in Fig. 12 applied to the flask. v

Referring to the drawings, 1 'is the cope of the flask, flanged at the upper and lower edge in the presentinstance. 2 is the drag, also flanged at the upper and lower edge. Located. between these two sections of the pattern 4.-

mounted. The pattern, in the present instance, extends into the cope section 1 and mounted on the cope section is an extension 5, which is used when the pat tern is of such a height as to warrant the introduction of more sand between the end of the pattern and the top of the mold. The extension 5 has lips 8 which extend over the flanges 9 on the cope section; there being lips on three sides, as illustrated in Figs. 4. and 5. On the other side is a key 10, which is driven into an undercut slot in the extension and bears against the end of the removed, the extension can be readily detilCllHhfIOlll the cope section.

Adapted to slide in the lower portion of the cope section 1 is a sand retaining frame 11 made in four sections as clearly shown in Fig. 7. The sections l2, '12 are beveled at each end, as shown at 13, and rest against theinclincd portions 1-1 ofthe sections 15. The sections 12 are slotted at 21 for the guide pins on the cope section and the sec tions 15 are also slotted for the reception of the guide pins. in the sections 15 are openings 19 for the reception of, bolts 18 on the blocks 17 which are mounted on the lower flange of the cope section 1. The bolts on the blocks also enter inclined slots 16 in the sections 12 so that. when the blocks are moved bot-h sections 12 and 15 are forced toward or from the center of the flask.

In order to move the blocks in unison, I mount a lever 23 on a lug 22 projecting from the cops section at each side of the posite side of the center. When the, lever is turned in one direction, the blocks 17 will be is turned in the opposite direction, the blocks flask is the match plate 3 upon which the moved toward each other and when the lever other rod is attached to the lever on the op-" 17 will be moved away from each other and, as the sand retaining frame is attached to the blocks, it is either moved so as to project into the flask or is withdrawn clear of the sand of the flask for the purpose described hereinafter.

In order to draw the flaskaway from the pattern after the mold has been formed, I pivot levers 26 at 27 on opposite sides of the flasks. The portions 28 of these levers extend through openings 28 of the flange of the cope l and also extend through openings 28 in the sand support 11; bearing upon the match board or the pattern sup port. The opposite ends of these levers are forked, as shown in Fig. 11, and span the flanged eccentric 29 mounted on a pivot 30, projecting from the stud 22. This eccentric has a handle 31 and-when this handle is port 11. This forms no moved in the proper direction, the levers are projected or retracted, as desired.

In order to aline the cope section of the flask with the drag, I mounton the drag 2 a plate 32 having a triangular pin 33, which projects through an opening in a bracket 34 on the cope. A plate 35, having a V-shaped end, is adjustably mounted on the bracket and neatly fits against the beveled edge of the pin 33. The plate can be secured in the position to which it is adjusted by -a screw, as clearly shown in Figs.

1 and 4. In some instances, a bridge piece 6' (indicated by dotted lines, Fig. 4,) is used in the sand and this bridge piece has legs 17 which extend to the lower edge of the cope section 1 and rest upon the sand sup part of the flask, being merely a means for retaining the sand in the proper position.

In making a mold with In improved molding flask, the steps are as ollows:-lf, for instance, a fire pot for a stove is to be cast, the cope is inverted and the pattern boardwith the pattern also inverted-is placed on the cope. The drag is then placed in position above the pattern board. Molding sand is introduced into the drag and when. struck off, the bottom board is applied, after which the flasks are turned, as shown in Fig. 13. The sand-retaining frame is then projected so as to extend into the flask; molding sand is introduced into the cope and rammed, as in Fig. 13. The cope is then bodily reniot'cd from the pattern board and pattern by operating the cams 29; causing the lovers 26 and, as the cope is raised, Fig. 14, it carries with it the mold formed by the sand, as the projecting frame extends under the mold. The pattern board, with the pattern is then removed from the drag and the cope, with its sectionot' the'mold, is placed upon the drag, with the two sand molds in con tact, after which the sand supporting frame is withdrawn, as in Fig.

'retain'the sand in to press upon the board.

15. The drag section of the flask is then free to be removed, leaving the two-part sand mold on the bottom-board in position for the metal to be poured therein. Before the metal is poured, however, a frame is placed over the sand mold; thus dispensing with the weights and the ordinary: frames usually employed, due to the fact that the mold and the frame are tapered so as to position during the pourin operation.

lf a pattern of greater height than could properly be handled in the cope section is to be cast, then a supplemental section is clamped thereto to the height desired, as

shown in Fig. 1-. The height of this supplemental section varies, and, in fact, there may be a number of supplemental sections of different heights employed to accommodate molds withpatterns of diflerent heights.

Where bridge pieces are necessary they are placed in the mold as shown by dotted lines, Fig. 4c, and the legs 7 will rest upon the sand retaining frame 11, as it will be understood that these bridge pieces are made detachable from the cope and remain in the sand mold until after the metal has been poured. guides in the cope if desired.

In Figs. 12 and 17, I have shown a modification of the arrangements of the sections of the sand retaining frame. The side section 36 has an angle slot 37, in which extends a tongue 38 on the section 39. In place of the blocks, I connect an extension of the section 36 with a bar 40, which is loosely connected to the operating lever 23 so that, upon moving the operating lever, the sections 86 will be moved in one direction and the sections right angles thereto.

.l claim:

1. The combination in a flanged flask, of a sand support mounted on the flask, said support being made in four sections arranged to slideon the flask, one of said sections being perforated and the others being' slotted; blocks arranged to slide on the flange of the flask, each block having two pins, one pin of each block entering the perforation in one of said sections, the other pin entering a slot in one of the other sections; and means for moving the blocks in They may be adapted to 39 will be moved at unison so as to cause the support to be proinner line.of the flask 15, so as to free 1 lower flange of the said section-on which the sand. support is mounted; each block having pins engaging the said sections of the sand support; levers pivotally mounted on opp o site sides of the flask; rods connecting the levers with the sliding blocks so that when the levers are operated the sand support will be projected or retracted.

3. The combination in a flask; of a sand support mounted at one end of the flask; means for retracting the sand support; 1evers on opposite sides of the flasks; and cams for actuating the levers so as to raise the flask, with its sand mold, clear of the I match board and of the pattern.

4. The combination in a flask, of a flanged cope section; a flanged extension thereon, one of said parts having undercut lips adapted to engage the flanges of the other part; and a pin for locking the two parts of the flask together. i

5. The combination of a flanged cope section; an extension mounted thereon; underout lips on three sides of the extension engaging the flange oi the cope section; with a pin adapted to a Way in the extension and arranged to rest upon the flange of the cope section, whereby the two sections are firmly locked together.

6. The combination in a flanged flask, 0i. two levers pivoted thereto, each lever having a portion extending through an opening in the flange of the flask; and an eccentric pivotally mounted on the flask and engaging the levers so that, when the eccentric is turned, the levers will be turned on their pivots.

7 The combination in a flask, of two leverspivotally mounted on the flaskand each having an extension on one side of the pivot; said levers being forked on the opposite side of the pivots; a flanged eccentric pivotally mounted engaging the forked portions of the levers; and a handle on the eccentric by which it is turned so as to actuate the levers to lift In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

ABRAM C. MOTT, JR.

Witnesses J 05. H. KLEIN, WM. A. BARR.

on the flask and 

